Exhibit 32.b

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Cinergy Corp., The Cincinnati Gas & Electric Company, PSI Energy, Inc. and The Union Light, Heat and Power Company (the “Companies”) on Form 10-Q for the period ending June 30, 2004 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, R. Foster Duncan, Chief Financial Officer of the Companies, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge and belief, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Companies.

Date: August 4, 2004

/s/ R. Foster Duncan
R. Foster Duncan
Chief Financial Officer

UNION LIGHT HEAT & POWER CO 10-Q